Cassava Leaf Compost Influences Growth, Yield and Nutrient Uptake of Rice
Nazmul Huq Hawlader
Department of Seed Science and Technology, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.
Md. Solaiman Ali Fakir
Department of Crop Botany, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.
Masum Ahmad
Department of Entomology, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.
Habibun Nesa
Department of Agricultural Extension (DAE), Khamarbari, Farmgate, Dhaka-1215, Bangladesh.
Md. Mustafizur Rahman
Department of Agricultural Extension (DAE), Khamarbari, Farmgate, Dhaka-1215, Bangladesh.
Irteja Hasan
Department of Geo-Information Science and Earth Observation, Patuakhali Science and Technology University, Patuakhali-8602, Bangladesh.
Md. Monirul Islam
Department of Soil Science, Patuakhali Science and Technology University, Patuakhali-8602, Bangladesh.
Md. Sagirul Islam Majumder *
The United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima-890-0065, Japan.
*Author to whom correspondence should be addressed.
Abstract
The application of compost as alternatives to reduce the use of synthetic fertilizers is considered a feasible agricultural practice to mitigate soil degradation caused by long term application of synthetic fertilizers. Therefore, the study aimed to investigate the effect of cassava leaf compost on growth, yield and nutrient uptake of rice. Six treatments of two rice varieties (BRRI dhan29 and BINA dhan5) and three sources of nitrogen (Control - no nitrogen applied but residual soil N was 0.123%, urea @ 200 kg ha-1 and Cassava Leaf Compost @ 10 t ha-1) were used in this study. Cassava Leaf Compost @ 10 t ha-1 and urea @ 200 kg ha-1 significantly increased effective tillers per hill, 1000-grain weight, and grain yield were 12.84 and 13.75, 25.00 g and 24.93 g, 5.57 t ha-1 and 6.047 t ha-1, respectively. Cassava Leaf Compost @ 10 t ha-1 and urea @ 200 kg ha-1 increased N uptake in root is 0.821% and 0.756%, and the residual effect of compost increased C, N, P, K and S availability in soil for the succeeding crop in Cassava Leaf Compost @ 10 t ha-1 applied plots. Carbon and N mineralization rates were higher than control and soils receiving recommended dose of inorganic fertilizers. Our findings suggested that compost could be used as biofertilizer to improve degraded cropland soils for sustainable agriculture.
Keywords: Cassava leaf, compost, growth, yield, nutrient uptake, soil properties