Total Nutrient Uptake by Grain plus Straw and Economic of Fertilizer Use

Abstract

An experiment was conducted at BINA (Bangladesh Institute of Nuclear Agriculture) substation, Satkhira on slightly calcareous silty clay soil during the boro season of 2009-2010 to investigate the effects of different combinations of inorganic fertilizers in order to achieve sustainable high yield goal in the STL-655 rice mutant cultivar. The six treatment combinations were: T 1 (absolute control), T 2 (N 60 P 20 K 40 S 10 Zn 1 ), T 3 (N 80 P 25 K 50 S 15 Zn 1.5 ), T 4 (N 100 P 30 K 60 S 20 Zn 2 ), T 5 (N 120 P 35 K 70 S 25 Zn 3 ) and T 6 (N 140 P 40 K 80 S 30 Zn 4 ) that was laid out in a randomized complete block design (RCBD) with three replications having per plot size was 5m x 4m. The results revealed that grain and straw yields of STL-655 rice mutant responded significantly with the different treatment combinations. The highest grain (3.95 t/ha) and straw yield (7.38 t/ha) was obtained in T 6 (Soil test basis high yield goal) treatment, which was significantly higher than all other treatments. The treatment T 6 (N 140 P 40 K 80 S 30 Zn 4 ) caused an increase of 60% grain yield and 27% higher straw yield over the control. Nutrient uptake of N, P, K and S by grain of boro rice (STL-655 rice mutant) varied from 25.14 to 48.02, 5.40 to 8.14, 11.76 to 23.02 and 4.15 to 7.09 kg/ha, respectively. The N, P, K and S uptake by straw of boro rice (STL-655 rice mutant) varied from 20.36 to 35.85, 5.47 to 11.05, 59.01 to 159.6 and 9.54 to 12.97 kg/ha, respectively.

Assessment of yield, quality and nitrogen index of Agrostietum capillaris grassland as affected by fertilizations

“…Crude protein (CP) was calculated as N × 6.25 and crude protein yield (CPY) as CP × DMY. The nitrogen uptake (NU) is the nitrogen absorbed by a plant and was calculated as a percentage of the amount of N accumulated in the plant (except roots) × DMY (kg ha -1 ) / 100 (Kabir et al, 2012). The unit nitrogen uptake (UNU) was calculated as the amount of N accumulated in the plant (except roots) / DMY (Hermanson et al, 2000).…”

Optimum NPSZn blended fertilizer formulation on yield and yield components of barley at EndaMokeni district, tigray

“…Low levels of agricultural output are typically attributed to low soil fertility brought on by insufficient and imbalanced fertilizer application [4]. Among the significant and crucial steps to replenish the lost nutrients is fertilization [5]. In line with this, Brhane and Teka [6] stated that balanced fertilization with an ideal application rate is required to promote and increase the yield of crops, including barley.…”