Open Access Original Research Article

Dry Matter Yield and NPK Uptake of Sweet Corn as Influenced by Fertilizer Application

Ronley C. Canatoy

Asian Journal of Soil Science and Plant Nutrition, Page 1-10
DOI: 10.9734/AJSSPN/2018/42605

Field experiment was conducted to determine the impact of fertilizer on the dry matter and nutrient uptake of sweet corn (Zea mays L. var Saccharata) under conventional tillage operation at the research station in Central Mindanao University of the Institute of Plant Breeding-University of the Philippines, Los Baños (IPB-UPLB) at Bukidnon, Philippines on February 2016 to May 2016.

The application of full recommended rate of inorganic fertilizer has shown great consistency among the parameters undertaken being the greatest, however, post hoc analysis would say that the difference present was not significant from each other. The significant influence was executed by the application of fertilizers towards the dry matter yield of sweet corn in stover and in grains as well as on the nitrogen, phosphorus and potassium uptake. The application of full recommended rate of inorganic fertilizer may be consistently the highest, however, comparison of means declares that no significant difference was present between the full recommended rate alone (T2) and that of the full recommended rate of inorganic fertilizer + 1-ton Vermicompost ha-1 (T6). Soil pH was greatly affected by the application of inorganic fertilizer alone. Moreover, the application of ½ RRIF + 2 tons of Vermicompost ha-1 caused significant effects towards the organic matter content (%) of the soil at harvest.

The application of full recommended rate of inorganic fertilizer alone and the combination of the recommended rate of inorganic fertilizer plus Vermicompost are possible ways that may be undertaken in order to have great dry matter yield in stover and in grains along with the nitrogen, phosphorus and potassium uptake of sweet corn plants. Higher dry matter and nutrient uptake will give way towards higher efficiency being an indicator towards sweet corn productivity under Bukidnon condition along with the possibility of maintaining the quality of the soil of Bukidnon, Philippines.

Open Access Original Research Article

Effect of Different Sources of Potassium on the Nutrient Status of Saline Calcareous Soil and Carrot (Daucus carota L.) Yield and Quality

Khaled A. Shaban, Mohsen S. Mahrous, Seham M. Abdel-Azeem, Rama T. Rashad

Asian Journal of Soil Science and Plant Nutrition, Page 1-14
DOI: 10.9734/AJSSPN/2018/42631

Aims: A field experiment was performed in a saline calcareous soil. Its aim was to evaluate the fertilization effects of potassium (K) from different sources in the form of a liquid solution sprayed on both plant and soil on some soil properties and on the carrot (Daucus carota L.) yield and quality. The purpose of the study is to try replacing the traditional soil application of some K fertilizers by spraying application using the liquid solution form.

Study Design:  A split plot design with four replicates.

Place and Duration of Study: The experiment was carried out during two successive winter seasons (2016/2017 and 2017/2018) at the El-Road village, Sahl El-Hussinia, El-Sharkia Governorate (32°15' 00" N 30°50' 00" E), Egypt.

Methodology: The K sources used were K-humate (K-H), K-nitrate (KNO3), and K-sulphate (K2SO4) in individual treatments with and without the compost in addition to the control. They were applied in a solution form sprayed on plant and soil at two rates: 600 and 1200 g K2O/ha. Sowing of seeds was performed and K application doses were applied three times at 21, 45, and 65 days after sowing.

Results: The lyotropic order of K mitigates salinity stress on the plant. The compost along with the applied K significantly intensified the soil available nitrogen and K, but no significant effect was observed for available phosphorous. Spraying K from different sources with the compost caused a significant increment in the soil available K in a descending order K-H > K2SO4 > KNO3. Soil available Zinc was significantly affected by K sources with a more pronounced effect by K-H. The carrot root length (cm), fresh weight (g), and yield, as well as the plant K use efficiency (KUE), were significantly increased by applying the K-H with the compost compared to the control alone. Minimum values were obtained for the KNO3 treatment without the compost.

Conclusion: The complex composition of compost may limit the fertilization effect of sprayed K in the humate form but improves that of sulphate and nitrate.

Open Access Original Research Article

Study on the Effectiveness of Natural Organic Fertilizers on Cassava (Manihot esculenta Crantz.) Cultivation

Kay Zar Linn, Phyu Phyu Myint

Asian Journal of Soil Science and Plant Nutrition, Page 1-10
DOI: 10.9734/AJSSPN/2018/42912

Aims: In this study, the field experiment was performed to study the soil properties changes, tuber yield and nutritional quality of Cassava (Manihot esculenta Crantz.) using organic fertilizers.

Study Design:  Two organic fertilizers treatments; Natural (wood ash 740 kg/ha + bat guano 740 kg/ha + defatted sesame meal 1880 kg/ha) and Vedagro (1480 kg/ha) along with Control (no fertilizer) were applied. The length of the experimental farm is 14 m, and the width is 7 m long. Totally seven rows of cassava cultivation were carried out in this 98 m2 experimental farm. Fourteen ridges were prepared in each row. In the farm, one row of cassava cultivation (14 m long) including 14 ridges was treated with no fertilizer and assigned as "Control". Next three rows were treated with natural fertilizer (defatted sesame meal, bat guano, and wood ash) and denoted as ‘Natural'. The other three rows were treated with commercial organic fertilizer Vedagro and it was assigned as ‘Vedagro'.

Place and Duration of Study: The study area is located in Seik Kyi Village, Kyon  Pyaw Township, Ayeyarwady Region (latitude 15º40ʹN and longitude 94º15ʹE), Myanmar. It was conducted during the 2013 March and 2014 January cropping season.

Methodology: The soil samples were collected in randomized block design replicated three times. The characteristics and physicochemical properties of before fertilized and post harvest soil samples were studied by AOAC methods.

Results: Initial soils were acidic, very low in organic matter (OM), moderately low in N and P. The organic fertilizers used had relatively high N and P and good percentages of K, Ca and Mg. At the post harvest time, Natural and Vedagro increased soil OM, N, P, K and Mg significantly. Natural fertilizer did not much change soil pH, while Vedagro increased it. Proximate composition of Cassava on different treatments has been found as 57.02, 57.67 and 67.22% of moisture, 0.10, 0.08 and 0.09% of crude fat, 1.32, 0.56 and 0.76% of protein, 1.24, 1.01 and 1.12% of dietary fiber, 39.49, 39.77 and 38.56% of carbohydrate, 0.83, 0.91 and 0.85% ash, 161, 165 and 158 kcal /100 g based on fresh sample for Natural, Vedagro and Control, respectively.

Conclusion: Relative to Control, both Natural and Vedagro fertilizer increased tuber yield about 79%. The study revealed that both organic fertilizer treatments had high tuber yield, the high nutrient value in tuber and the least post harvest soil nutrients depleting.

Open Access Original Research Article

Infiltration Models Validation in a Sandy Loam Soil in Zing, Taraba State

H. J. Philip, S. A. Gisilanbe, A. T. Gani, T. W. Joram

Asian Journal of Soil Science and Plant Nutrition, Page 1-5
DOI: 10.9734/AJSSPN/2018/42878

Predicting the infiltration characteristics for soils is crucial for proper management and sustainable use of soil and water resources for prevention of soil erosion. The study was carried out to evaluate the infiltration models by measuring the field infiltration rate on sandy loam soils in Zing. Kostiakov, Modified – Kostiakov and Horton infiltration models were evaluated by comparing the measured and predicted infiltration rate of the soils. Fifteen infiltration runs were made by ponding water into double ring infiltrometer which was used to carry out the measurements. Parameters were developed from measured infiltration data and laboratory analyses of soil samples. Horton and Kostiakov models with an RMSE (0.0372 and 0.0365) and the R2 value of 0.999 and 0.998 respectively, closely predicted the measured infiltration rate, and can as well stimulate infiltration under the field conditions

Open Access Original Research Article

Evaluation of Nitrogen Sources and Polymer Coated Fertilizers on Wheat Yield in Sandy Soil

Rehab H. Hegab

Asian Journal of Soil Science and Plant Nutrition, Page 1-12
DOI: 10.9734/AJSSPN/2018/44164

Controlled-release fertilizers are the novel and most technically advanced way of supplying mineral nutrients to crops. Compared to conventional fertilizers, their gradual pattern of nutrient release better meets plant needs, minimizes leaching, and therefore improves fertilizer use efficiency. A field experiment was carried out to study the effects of different nitrogen sources, application times, and nitrogen rates at south El-kantra Research Station, Desert Research Center, North Sinai, Egypt. The study aimed to investigate nitrogen rates at 107,160, and 214 kg/ha on wheat yield components, nutrients content and uptake by straw and grains of wheat crop (var. Sakha 93) and the level of available nutrients in the soil.

The study revealed that increasing the application rate of N, increased yield components, nutrients content and uptake of wheat as well as increased the elements in soil. Application of 214 kg/ha of Polymer-Coated Urea (PCU) at the heading stage resulted the highest yield and recorded 6.37, 3.02, 3.35 ton/fed and 51 g for dry weight of biological yield, grain, shoots and 1000-grain, respectively. This study highlights the efficiency of fertilizers that can be significantly improved with the use of PCU as N sources and subsequently minimise the pollution hazard with other studied N sources. The highest value of N recovery efficiency (41.88%) was recorded by application of 214 kg/ha PCU at the heading stage when compared with the conventional source.