scholarly journals Effects Of Organic And Inorganic Sources Of K On Rice Yield And Soil K Balance In The Rice-Rice Cropping System

1970 ◽  
Vol 36 (2) ◽  
pp. 305-311
Author(s):  
PK Saha ◽  
M Akter ◽  
MAM Miah ◽  
SK Zaman

Field experiments were conducted through T. Aman 2003–Boro 2008 at the Bangladesh Rice Research Institute (BRRI), Gazipur Farm with a view to determining the appropriate dose of K fertilizer in soils under double rice cropping system and to find out the alternative source of K for wet land rice cultivation. Four levels of inorganic K (0, 33, 50 & 66 kg K/ha and farmers’ practice from MoP) and one recycling of rice straw 4.5 t/ha (dry basis) were tested. Incorporation of rice straw into soil contributed significantly to grain yield in successive growing seasons comparable with inorganic K fertilizer. In clay- loam soil, K at the rate of 50 kg K/ha should be applied to obtain the maximum yield in both T. Aman and Boro rice seasons. Rice straw may be a potential alternative source of K for sustaining soil K fertility and maximizing rice yield. Agronomic use efficiency of K decreased with increasing K levels. A narrower balance of K was observed when rice straw or a higher dose of inorganic K fertilizer was used. Keywords: K; rice yield; soil K balance; rice straw. DOI: http://dx.doi.org/10.3329/bjar.v36i2.9258 BJAR 2011; 36(2): 305-311

2001 ◽  
Vol 49 (3) ◽  
pp. 299-303 ◽  
Author(s):  
A. M. Tawaha ◽  
M. A. Turk

Field experiments were conducted during the two growing seasons of 1999 and 2000 at the research farm of the Jordan University of Science and Technology (JUST) to study the effect of the time of weed removal on the yield and yield components of faba bean (Vicia faba L.). Removing weeds from 25 to 75 days after crop sowing led to significantly larger yields than on plots which were not weeded. Maximum yield was obtained in both years when weeds were removed thrice at 25, 50 and 75 days after crop sowing.


2015 ◽  
Vol 49 (5) ◽  
Author(s):  
Santosh Singh

Field experiments were carried out at Lucknow, India to evaluate the optimum plant row arrangement of geranium and to study the effects of different rates of fertilizer N, P and Zn for the yield assessment in a geranium-garlic intercropping system. A paired row arrangement (40/80 cm) of geranium planting significantly increased the herb and essential oil yield over the conventional single row planting method (60x30cm). The former gave 20.6 % more herbage than the geranium single row intercrop system, with a 22.3 % increase in oil yield. Application of N at 160 kg ha<sup>−1</sup> significantly increased the herb and oil yields of geranium and bulb yield of garlic over the control and 80 kg N ha<sup>−1</sup>. Uptake of N by geranium was also significantly higher at 160 kg N ha<sup>−1</sup>. Application of phosphorus at 40 kg P<sub>2</sub>O<sub>5</sub> ha<sup>−1</sup> proved significantly better than the no P control in the production of geranium oil and garlic bulbs. Uptake of Zn increased significantly up to 40 kg P<sub>2</sub>O<sub>5</sub> ha<sup>−1</sup>. Higher rates of P decreased the Zn uptake by the plants. Application of 30kg ZnSO<sub>4</sub>ha<sup>−1</sup> showed a significant response on the herb and oil yields over the no zinc control. The higher growth indices such as monetary equivalent ratio (1.45), area time equivalent ratio (1.44), land use efficiency (144 %) and benefit cost ratio (6.37) were recorded with a geranium paired intercrop system compared to other cropping systems. The geranium paired intercrop system proved advantageous in enhancing the economic returns by 1.73 – a two fold increase over the geranium single row, sole cropping system. It is concluded from this study that intercropping of garlic with a geranium paired row system proved highly beneficial in terms of getting higher economic returns by almost a factor of two over the conventional geranium single row planting method. A fertilizer addition of 160 kg N, 40 kg P<sub>2</sub>O<sub>5</sub> and 30 kg Zn SO<sub>4</sub> ha<sup>−1</sup> is recommended for achieving the maximum yield advantages in a geranium-garlic intercropping system.


Author(s):  
P. Aravinth Kumar ◽  
M. V. Sriramachandra Sekharan ◽  
T. Muthukumararaja

Aim: Assess the effect of silicon and nitrogen application on chemical nutrition of plant and soil grown in Typic Ustifluvent soil Study design: Factorial RBD Place and duration of study: Field experiments was conducted in farmers holding in Kuttalam Block, Mayiladuthurai district. The experiment was conducted for two seasons Methodology: Field experiments was conducted in farmers holding during kuruvai and samba seasons to. The treatments consists of silicon levels viz., 0, 50,100 and 150 kg ha-1 and nitrogen levels viz., 0, 50,100, 150 kg ha-1. using rice as test crop var. ADT43 and CR1009.The grain and straw yield was recorded at harvest. The grain and straw samples were analyzed for nutrient contents and corresponding uptake was calculated. The soil samples were analyzed for nutrient status at different physiological stages. Results: The result revealed that graded doses of nitrogen and silicon applied alone or in combination caused significant improvement in rice yield over control. The rice yield reached its pinnacle (5600, 6786 kg ha-1) and straw yield (6811, 8031 kg ha-1) was noticed with 150 kg N ha-1 + 150 kg Si ha-1. However it was comparable with 150 kg N ha-1 + 100 kg Si ha-1 and 100 kg N ha-1 + 150 kg Si ha-1. The uptake increased with nitrogen and silicon levels. The highest nutrient uptake was recorded with 150 kg N ha-1 + 150 kg Si ha-1. It was comparable with 150 kg N ha-1 + 100 kg Si ha-1. Available nitrogen, phosphorus, potassium, and silicon increased with N and Si levels. The highest available N, P, K and Si was maximum when nitrogen and silicon was applied at 150 kg ha-1. Conclusion:  Conjoint application of 150 kg N ha-1 and 150 kg Si ha-1 recommended to realize maximum yield of rice grown in soil low nitrogen and silicon


Rice Science ◽  
2016 ◽  
Vol 23 (3) ◽  
pp. 132-143 ◽  
Author(s):  
Zhou Chun-huo ◽  
Zhao Zun-kang ◽  
Pan Xiao-hua ◽  
Huang Shan ◽  
Tan Xue-ming ◽  
...  

2020 ◽  
Vol 19 (8) ◽  
pp. 2103-2115
Author(s):  
Xing ZHOU ◽  
Yu-lin LIAO ◽  
Yan-hong LU ◽  
Robert M. REES ◽  
Wei-dong CAO ◽  
...  

Author(s):  
Dr. Abou El Enin, MM, Dr. Abo-Remaila S.I

 Three pot experiments were carried out at Agric. Res. Station, Fac. Agric., Al-Azhar Univ. Nasr City during 2011/2012, 2012/2013 seasons, each one was to investigate the effect of four un mineral package for each N, P and K on quality of three wheat Egyptian varieties, such as, Sakha-93, Masr-1 and Banisweif-6. The N package were 75 kg N/fed (control), 75 kg N/fed + the twice cysteine spraying (each 150 ppm), 37,5 kg N/fed + bio N fertilizer (cerialen) + the twice cysteine spraying and 37,5 kg N/fed + bio N fertilizer (biogen) + the twice cysteine spraying. The p fertilizer packages were phosphorine, humic acid 6%, phosphorine+ humic 6% acid and control (without P). The K fertilizer package were Potassiumage, Banana ash 4%, Potassiumage + Banana ach 4% and control (without K fertilizer). On the other hand, a field experiment was applied in 2013/2014 session at El Klag region, Kaliobia Governorate, Egypt to confirm the result gaved from the pot experiments. However pot experiments were designed in complete randomizes design, the field experiment was in split plot design. Results showed significant differences between the three tested wheat varieties such as grain protein contents, wet and dry gluten content. Baniswif-6 gave grains quality characters higher than Sakha-93 and Masr-1 varieties in cache season under pot and field experiments. Technological properties were differed significantly between the studied nitrogen fertilizers packages treatments during the three growing seasons under pot or field experiments. In the second experiments, there were significant differences between the various phosphorus fertilizer packages treatments in both seasons under pot and field experiments. P4 and P3 treatments recorded the highest values of technological properties as compared with P1 treatment in the three seasons in pot or field experiments. The interaction effect between (var. X P. packages) showed that must of the studied characters were significant by the interaction between the two studied factors. Finally, in the third experiment, significant differences were observed between the four studied potassium fertilizers packages for all studied characters under pot and field experiment in both seasons, whereas K4 treatments gave the highest values of   technological characters. Also K3 treatment ranked the second and produced the highest values of the previous traits in both seasons. Accordingly, the three wheat varieties showed highest responsibility to different N, P and K fertilizer packages in relation to some technological properties in pot or field experiments under these conditions  


2019 ◽  
Vol 44 (2) ◽  
pp. 203-221
Author(s):  
M Ataur Rahman ◽  
MA Rouf ◽  
KMF Hossain ◽  
MB Rahman ◽  
MA Wohab

The necessity of more food production from limited land enforced cropping intensification over-exploring the natural resources in Bangladesh. This field experiment was initiated to achieve improve and sustainable productivity of an intensive wheat-maize-rice cropping system with improved management of natural resources. Four levels of nutrient managements were tested under four soil management treatments starting with wheat crop sown in November 2009 and ending with the harvest of 8th wheat crop in the system during March 2017. Yield and yield contributing characters of component crops and soil properties were studied following standard methods. Soil management treatment of rice straw mulch application in reduced till-bed or well-till flat soil upon wheat sowing was equally effective in conserving soil moisture, enhancing wheat root development, reducing weed growth and thereby positively influenced spikes/m2 and finally wheat yield. Similarly, wheat straw mulch application contributed to ears/m2 and grain yield of maize. Nutrient levels of recommended fertilizers plus 5.0 t/ha cowdung resulted in yield improvement of wheat and maize throughout the years. However, neither nutrient management nor soil management alone but the combination of recommended fertilizers with 5 t/ha cowdung couple with rice straw mulching in wheat and wheat straw mulching in maize resulted in maximum wheat and maize yield over the years. Rice yield was similar for different treatment combinations until the 4th cropping cycle and thereafter rice yield was also improved by the residual effect of straw mulches. Crop residue mulching along with addition of organic and inorganic fertilizers was found to be a promising soil management technology for achieving sustainable increased productivity of wheat-maize-rice system. Bangladesh J. Agril. Res. 44(2): 203-221, June 2019


2019 ◽  
Vol 2 (1) ◽  
pp. 223-237
Author(s):  
Bisheshwor Prasad Pandey ◽  
Khem Raj Pant ◽  
Mathura Yadav ◽  
Narayan Khatri

Field experiments were conducted during rainy seasons of 2017 and 2018 at National Wheat Research Program (NWRP), Bhairahawa to identify the suitable age and appropriate dose of digestate/biogas slurry regarding yield maximization of rice (cv. Ram dhan). The experiment compared the effect of different age [5 days (fresh), 90 days (3 months) and 180 days (6 months)] and dose (0, 5, 10 and 15 t ha-1) of digestate/biogas slurry on rice yield. The experiment was laid out in Randomized Complete Block design (RCBD) with three replications. Grain yield of rice was significantly higher (4.5 t ha-1) with the application of biogas slurry of 5 days than 90 days (4.3 t ha-1) age, in 2017 A. D. Similarly, yield was significantly higher (4.6 t ha-1) with the application of biogas slurry 5 days than of 90 days (4.5 t ha-1) age, in 2018.  Yield due to the application of biogas slurry of 5 days was equal to the yield resulted from the use of biogas slurry of 180 days in 2017 and 2018.  The pooled analysis showed that the yield with the application of biogas slurry of 5 days age was significantly higher (4.6 t ha-1) than the yield due to the application of biogas slurry of 90 (4. 4 t ha-1) and 180 days (4.5 t ha-1) age. The yield of rice has been found increasing significantly as the dose of biogas slurry was incremented from 0 t ha-1   to 15 t ha-1 in 2017, 2018 and in pooled analysis. The yield of rice was significantly higher (4.6 t ha-1)   in 2018 than in 2017 (4.4 t ha-1), in pooled analysis. Thus, the use of biogas slurry of the age of 5 days with the dose of 15 t ha-1 produced the  higher grain yield of rice. 


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