Effect of Planting Methods and Seedling Age on Growth, Yield and Nutrient Uptake in Rice under High Rainfall Areas of Bay Islands

Abstract

A field experiment was conducted in farmer’s field during Kharif season at Badmaspahar village of South Andaman under National Innovation on Climate Resilient Agriculture (NICRA) to find out the influence of planting methods, seedling age on growth, productivity, profitability, nutrient uptake of rice under higher rainfall areas of Bay Islands. Among the method of planting and age of seedlings, square planting with 14 days old seedlings recorded the highest dry matter production of 63.2% higher dry matter production as compared to random planting with 28 days old seedlings. Maximum grain and straw yield of 4855 and 9460 kg/ha respectively was recorded square planting (20 x 20 cm) with 14 days old seedling which was 64.6, 45.6 and 71.7, 59.9% higher grain and straw yield as compared to random planting with 28 days old seedlings and same age of seedlings with line planting respectively. Higher gross return of Rs. 50920/ ha and net return of Rs. 32170/ ha with B: C ratio of 2.72 was recorded in square planting (20 x 20 cm) with 14 days old seedling. The higher N, P and K uptake of rice (78.7, 25.1 and 114.8 kg/ha, respectively) was recorded in square planting (20 x 20 cm) with 14 days old seedlings was comparable with line planting (20 x 15 cm) with 14 days old seedlings. Hence, it can be concluded that square planting (20 x 20 cm) with 14 days old seedlings with stand lodging, produced more economic yield and net return for realizing efficient use of resources and productivity.

Nutrient Uptake and Soil Health as Influenced by Plant Density and Age of Seedlings of Rice (Oryza sativa L.) under Modified SRI Method of Planting

“…Planting two seedlings hill -1 recorded higher nutrient uptake than others and it was mainly attributed to better root activity and increased drymatter production. Similar findings are made by Bommayasamy et al, (2020). Similarly, combination of 25 x 15 cm spacing and 21 day old two seedlings hill -1 had significantly increased the P and K uptake at panicle initiation, flowering and harvest stages during both the years of study.…”

“…Similar results were observed by Rajendran (2009). Available nutrient status gets depleted as a consequence of biomass production under best combination of non-monetary inputs (Bommayasamy et al, 2020). There was no significant interaction among treatment combinations on post-harvest soil available N, P and K status.…”

Spatial distribution of soil nutrients and evaluation of cultivated land in Xuwen county

“…The climate, parent material, and soil conditions in Xuwen County are basically the same, but the abundance and deficiency of various soil nutrient indicators were varied which is quite common everywhere. After long-term agricultural planting, the soil nutrients also have changed as reported earlier as well ( Bommayasamy, Singh & Rahman, 2020 ). This study is to explore the spatial distribution characteristics of soil nutrients within the county, to understand the spatial changes of soil nutrients, evaluate the soil fertility of cultivated land, and provide a scientific basis for formulating reasonable land use management plans and technical support for precision agriculture.…”

“…The spatial variation of soil nutrients is the result of the combined action of natural (climate, soil parent material, topography, soil physical and chemical properties, c) and human factors (fertilization, farming methods, planting structure, etc .) ( Hosseini, Naeini & Bameri, 2016 ; Li et al, 2017 ; Singh et al, 2019 ; Bommayasamy, Singh & Rahman, 2020 ). The results of this study show that there are certain regional differences in the overall content.…”

County-Scale Spatial Distribution of Soil Nutrients and Driving Factors in Semiarid Loess Plateau Farmland, China

“…In addition, the impact of several geographical variables on soil nutrient content is complicated. Soil nutrient variation is caused by the combined effect of natural elements like climate, soil parent material, terrain, and soil texture, as well as human activities including fertilization, irrigation application, farming methods, and planting structure [5,37,38]. However, different nutrient factors tend to have different spatial distribution patterns.…”