Performance of Growth and Yield of Rice (Oryza sativa L.) Varieties in a Cassava (Manihot esculenta Crantz)/Rice Intercrop in the South West Nigeria

2007 ◽  
Vol 2 (4) ◽  
pp. 359-367
Author(s):  
C.J. Okonji . ◽  
K.A. Okeleye . ◽  
A.A. Oyekanmi .
2020 ◽  
Vol 29 (2) ◽  
pp. 267-278
Author(s):  
Elías CUMARI LAULATE ◽  
Juan Imerio URRELO CORREA ◽  
Rodrigo GONZÁLES VEGA ◽  
Julio PINEDO JIMÉNEZ ◽  
Joel VÁSQUEZ-BARDALES

En la región Loreto, se han realizado muchos esfuerzos para alcanzar altos rendimientos de la yuca y el arroz, los cuales poseen moderados potenciales de rendimiento; siendo estos cultivos, una garantía en la alimentación de la población, ya que son de mucha demanda por la población rural amazónica. El objetivo del estudio fue determinar el comportamiento de Oryza sativa L. variedad “INIA 509 la esperanza” y Manihot esculenta crantz variedad “señorita” en dos localidades de siembra en la región Loreto. Fueron sembradas bajo un sistema de Bactris gasipaes H.B.K “pijuayo” en las localidades El dorado y el Bolloquito ubicadas en el eje de la carretera Iquitos-Nauta en la Amazonía peruana. El cultivo del arroz mostró significancia estadística (p< 0.01) en las características agronómicas con mayores promedios en El dorado para altura de planta (81,61 cm), cantidad de matas (21,55), cantidad de panojas (21,55), peso de granos por mata (0,08 kg) y rendimiento de grano (2656,14 k/ha). En el cultivo de la yuca mostraron significancia estadística (p< 0.01) en las características agronómicas con mayores promedios en el Bolloquito como altura de planta (255,55 cm) y altura de la primera ramificación (130,22 cm), mientras en El dorado mostraron significancia estadística (p< 0.05) para peso de raíz por planta (2,59 kg) y rendimiento de raíces (19689,07 kg/ha), los cultivos se comportan según las localidades de siembra, expresando mejores características agronómicas y rendimientos de manera específica.


2021 ◽  
Vol 9 (1) ◽  
pp. 36-43
Author(s):  
Dominggus De Lima ◽  
Ch. W. Patty

Livestock is an important component to fulfil food need and as source of protein for the community which increase annually. These research objective was to determine the type of agricultural food crop waste, how much production of dry matter, crude protein, and Total Gigability Nutrit and also to find out how much the capacity of agricultural food crop waste in the Waelata District, Buru Regency. Feedstuff development is directed to optimize the use of local feed source, in particular crops waste. The results showed that crops waste available in Waelata were dominated respectively by rice (Oryza sativa L.) 92.17 %, sweet potato (Ipomoae batatas) 2.81 %, corn (zea mays ssp.) 1.89 %, peanut (Arachis hypogaea L.) 1.89 %, and cassava (manihot esculenta crantz) 1.12 %. Total dry matter production of the crops waste were rice (Oryza sativa L.) 2.52 tones/ha, sweet potato (Ipomoae batatas) 1.78 tone/ha, corn (zea mays ssp.) 0.63 tone/ha, peanut (Arachis hypogaea L.) 1.67 tones/ha, and cassava (manihot esculenta crantz) 0.41 tones/ha. Capacity of crops waste to support livestock systems based on dry matter, crude protein, Total Digestible Nutrient was respectivelly e.317 UT, 263 UT, and 3.134 UT.


2020 ◽  
Vol 28 (2) ◽  
pp. 177-184
Author(s):  
Elías CUMARI LAULATE ◽  
Juan Imerio URRELO CORREA ◽  
Rodrigo GONZÁLES VEGA

El objetivo del estudio fue determinar la viabilidad económica y financiera de un sistema productivo de pijuayo (Bactris gasipaes Kunth) para fruto, asociado de manera secuencial con arroz (Oryza sativa L.) y yuca (Manihot esculenta Crantz). La investigación se desarrolló en tres parcelas experimentales ubicadas a lo largo de la carretera Iquitos-Nauta, Loreto, Perú: Campo experimental El Dorado km 25,5; Parcela experimental El Paujil km 35,5 y Parcela experimental Bolloquito km 75,5. Fue empleado el método analítico relacional para evaluar los resultados económicos y financieros de los componentes arroz y yuca en un sistema de producción de pijuayo para fruto (04 genotipos, más un testigo, genotipo local), distribuidos en tres bloques al azar. Encontramos que los componentes arroz y yuca se muestran económicamente lucrativos, donde la parcela de El Dorado resultó tener mayor rentabilidad. En el sistema productivo de pijuayo para fruto, el arroz y la yuca hacen posible los ingresos económicos suficientes durante los primeros años. Por lo tanto, el sistema agrario productivo de pijuayo, asociados con arroz y yuca es viable económica y financieramente.


Pathogens ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 172
Author(s):  
Maqsood Ahmed Khaskheli ◽  
Lijuan Wu ◽  
Guoqing Chen ◽  
Long Chen ◽  
Sajid Hussain ◽  
...  

Rice (Oryza sativa L.) is a major cereal food crop worldwide, and its growth and yield are affected by several fungal phytopathogens, including Magnaporthe oryzae, Fusarium graminearum, F. moniliforme, and Rhizoctonia solani. In the present study, we have isolated and characterized root-associated bacterial endophytes that have antifungal activities against rice fungal phytopathogens. A total of 122 root-associated bacterial endophytes, belonging to six genera (Bacillus, Fictibacillus, Lysinibacillus, Paenibacillus, Cupriavidus, and Microbacterium) and 22 species were isolated from three rice cultivars. Furthermore, the 16S rRNA sequence-based phylogeny results revealed that Bacillus was the most dominant bacterial genera, and that there were 15 different species among the isolates. Moreover, 71 root-associated endophytes showed antagonistic effects against four major fungal phytopathogens, including M. oryzae, F. graminearum, F. moniliforme, and R. solani. Additionally, the biochemical, physiological, and PCR amplification results of the antibiotic-related genes further supported the endophytes as potential biocontrolling agents against the rice fungal pathogens. Consequently, the findings in this study suggested that the isolated bacterial endophytes might have beneficial roles in rice defense responses, including several bioactive compound syntheses. The outcomes of this study advocate the use of natural endophytes as an alternative strategy towards the rice resistance response.


2018 ◽  
Vol 2 (2) ◽  
pp. 188
Author(s):  
Ahmad Khanafi ◽  
Yafizham Yafizham ◽  
Didik Wisnu Widjajanto

The objective of this research was to investigate the effectiveness of combination of bio-slurry fertilizer and NPK fertilizer on the growth and production of two varieties of rice. The experiment was assigned in a completely randomized design of factorial pattern. The first factor was the combination of bio-slurry and NPK fertilizer that consisted of P0 = no added fertilizer (control) 0 ton/ha, P1 = NPK fertilizer 550 kg/ha (165 kg N, 33 kg P, 45 kg K); P2 = bio-slurryfertilizer 2.3 tons/ha (45 kg N, 14 kg P, 23 kg K) and NPK fertilizer 400 kg/ha (120 kg N, 24 kg P, 32 kg K); P3 = bio-slurryfertilizer 4.6 tons/ha (90 kg N, 28 kg P, 46 kg K) and NPK fertilizer 250 kg/ha (75 kg N, 15 kg P, 20 kg K); P4 = bio-slurry fertilizer 5.9 tons/ha (115 kg N, 36 kg P, 59 kg K) and NPK fertilizer 100 kg/ha (30 kg N, 6 kg P, 8 kg K); and P5 = bio-slurryfertilizer 8.5 tons/ha (165 kg N, 52 kg P, 85 kg K). The second factor was varieties of rice that consisted of V1 : IR-64 and V2 : Ciherang. Each treatment was repeated three times. Parameters observed were plant height, number of tillers, weight of 1.000 grains, and rice production. Data were analyzed using ANOVA and continued with Duncan’s Multiple Range Test (DMRT). The results showed that the combination of bio-slurry fertilizer and NPK fertilizer were significantlyaffect (p <0.05)all observation parameters, while varieties of wetland rice did not show significant effect on all observation parameters (p<0.05). The application of bio-slurry fertilizer in single treatment or in either combination with NPK fertilizer had the same result with the treatment of NPK fertilizer on the growth and yield of rice. Keywords: rice, fertilizer combination, bio-slurry fertilizer, NPK fertilizer


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