Influence of integrated nutrient management practices on dry matter production, yield and NPK uptake of transplanted rice (Oryza sativa)

Abstract

A field investigation was carried out during Rabi season (Pishanam rice) of 2012-2013 at wetland of Central Farm, Agricultural College and Research Institute, TNAU, Killikulam, to study the effect of integrated nutrient management practices on dry matter production, yield and NPK uptake of transplanted rice. The treatments were laid out in a Randomized Block Design and replicated thrice using the rice variety ADT(R) 45. Among the different integrated nutrient management practices, application of GLM @ 6.25 t ha-1 + Azophosmet + 100 % NPK registered significantly the highest (P<0.01) dry matter production at all the stages (Active tillering; 1690, flowering; 9100 and harvest;14490 kg ha-1). The grain yield was increased, when GLM was integrated with 100 % NPK application (6030 kg ha-1). The grain yield was further increased, when Azophosmet was applied through seed and soil application along with GLM and 100 % NPK (6617 kg ha-1). However, it was on par with application of FYM + Azophosmet + 100 % NPK. The same trend was noticed in straw yield also. The uptake of N, P and K nutrients by rice crop at har-vest stages (95.6, 37.7 and 118 kg ha-1) of crop growth was remarkably increased by the application of GLM + Azophosmet + 100 % NPK. Among the various nutrient management practices, application of GLM + Azophosmet + 100 % NPK registered superior growth indicators due to the effective utilization of various nutrients and subsequent accumulation of more assimilates which inturn led to improved vegetative growth and higher yield of transplanted rice.

Seaweed Extract for Sustainable Rice Production- A Review

“…Overall, the effect of seaweed extracts (liquid and granules) on rice (var.-Rajeshwari) nutrient uptake revealed that treatment-wise differences in the nutrient contents of rice grains and straws were found to be non-significant, while the fertility levels and the application of seaweed extracts had a significant impact on the nutrients that rice grains and straws absorbed. The similar results of this experiment were reported by Krishna Kumar et al, in 2005 [50] and Senthivelu et al, 2007 [51]. Table 4.…”

“…1. Diagrammatic representation of the physiological reactions in plants induced bytreatments with seaweed extract[27]…”

Integrated nutrient management practices on dry matter production, yield and NPK content of transplanted rice

“…Dry matter production Results pertaining to both the consecutive years and pooled mean values (Table 1) revealed that irrespective of different treatments, dry matter yield of paddy increased with advancement of crop growth upto 90 DAT. The results were supported by Singh and Mandal (1997) [22] ; Shah and Kumar (2014) [19] and Jeyajothi and Durairaj (2016) [11] . In general comparatively higher dry matter yield of paddy was observed in soils amended with inorganic or organic sources of nitrogen applied either singly or in combination over control at different growth stages (Bar et al, 2004;Shah and Kumar, 2014 and Sahu et al, 2015) [4,19,17] .…”

“…However, on 90 DAT, these treatments remained at par again with 75% RDN from urea + 25% RDN from FYM (T 5 ) and 50% RDN from urea + 50% RDN from FYM (T 6 ) amended soil followed by soil treated with 50% RDN from urea + 50% RDN from FYM + 10 tonnes Azolla ha -1 (T 11 ) showing similarity effects with the remaining N treatments except soil incorporated with 20 tonnes Azolla ha -1 (T 4 ) . Higher dry matter production might be due to increased availability of major nutrients through chemical fertilizer and mineralized nutrient from organic sources throughout the cropping period (Jeyajothi and Durairaj, 2016) [11] . This leads to enhancement of proficient growth and development of rice through highest uptake and utilization of the nutrients.…”

Growth, yield and nutrient uptake of hybrid rice as influenced by nutrient management modules and its impact on economic of the treatments

“…Similarly, Lin and Lin (1985) reported that high N levels resulted in higher tiller number and leaf area index throughout the growing season of rice. Jeyajothi and Durairaj (2016) found that application of green leaf manure @ 6.25 t ha -1 + Azophosmet + 100% NPK registerd significantly the highest dry matter production at all growth stages of rice. The highest panicle length, number of spikelets panicle -1 and number of grains panicle -1 was recorded under treatment T 3 followed by treatment T 2 .…”