Coastal ammophilous soil lacks texture, form and shows poor basic carbon, CEC and nutrient memory properties. Among micronutrients, metallic mineral deficiency is happening in both crops and human. Zinc imperfection is widespread in sandy soil of marshy agro ecosystem proper low natural resources, CEC, high draining etc. The role of normal amendments like clay and organics plays a main role in reconstructing all these properties. Pot experiments were transported in the Department of Soil Science and Agricultural Chemistry, Annamalai University to evaluate the influence of mud and organic improvements on the soil properties and yield of rice and inky gram in ammophilous soil. The initial soil sample was typified as sandy consistency with slightly soluble (pH 8.07) and saline (EC 2.45 dS m-1). The rank of N, P and K were low. The following situations viz., T1–Control (100% urged NPK), T2–NPK + 20 t clay ha-1, T3–NPK + 40 t terra cotta ha-1, T4 –NPK + 20 t clay ha-1 + FYM @ 12.5 t ha-1, T5 –NPK + 40 t clay ha-1 + FYM @ 12.5 t ha-1, T6 –NPK + 20 t terra cotta ha-1 + Lignite Humic acid @ 20 kg ha-1 and T7–NPK + 40 t clay ha-1 + Lignite Humic acid @ 20 kg ha-1 were intentional in CRD using edible grain ADT-43 with three replications. Another container experiment was carried out to judge the influence of clay and organic improvements viz., FYM and humic acid on the soil characteristics and Zn availability for inky gram in ammophilous soil. In a Completely Randomized Design, the following treatments namely T1- Control (100% Recommended prescription of NPK), T2- NPK + ZnSO4 @ 25 kg ha-1, T3- T2 + clay @ 20 t ha-1, T4- T3 + Humic acid @ 20 kg ha-1, T5- T3 + FYM @ 12.5 t ha-1 were intentional using four replications. Black grandam variety ADT 3 was mature. In both the crops differing growth and yield parameters and yield were written. Post harvest soil samples were analysed for the physic-chemical features, available big nutrients and minor element Zn. The results of the pot experiment on edible grain showed that among the situations T7, application of N + terra cotta @ 40 t ha-1 + HA @ 20 kg ha-1 recorded maximal soil available foods viz., NH4+-N (48.26 mg kg-1), NO3- -N (36.33 mg kg-1), Olsen P (5.13 mg kg-1) and NH4OAc-K (91.21 mg kg-1) at harvest stage respectively. This situation also written the highest yield individuality and yield of rice. The results of the study on evil gram designated that the application of both the corrections were efficient in reconstructing the growth, yield of angry gram and more Zn availability and Zinc use effectiveness. Among the treatments T4, application of NPK + ZnSO4 @ 25 kg ha-1 + brick @ 20 t ha-1+ Humic acid @ 20 kg ha-1 accounted for a meaningful increase in the DTPA-Zn content in soil besides improving the natural carbon and convenient nutrient status.
Author(s) Details:
R. Singaravel,
Department
of Soil Science and Agriculture Chemistry, Faculty of Agriculture, Annamalai
University, Tamil Nadu - 608 002, India.
K.
Vishwanathan,
Department
of Soil Science and Agriculture Chemistry, Faculty of Agriculture, Annamalai
University, Tamil Nadu - 608 002, India.
T. Dhivya,
Department of Soil Science and Agriculture Chemistry, Faculty of
Agriculture, Annamalai University, Tamil Nadu - 608 002, India.
Please see the link here: https://stm.bookpi.org/RHAS-V5/article/view/8823
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