Effect of Cow Manure Dosages as Organic Fertilizer on the Productivity of Organic Rice in West Sumatra, Indonesia

Abstract

This research was conducted on rice paddy area at the Simarasok Village, West Sumatra Province, Indonesia, aimed at investigating the effect of dosage of cow dung as organic fertilizer on growth, yield component and production of organic rice. The experiment was arranged using a Complete Randomized Block Design with four treatments and six replications. The treatment was organic fertilizer of cow dung composted using local microbial organisms with four dosage levels, namely: a) 2 tons/ha; b) 4 tons/ha; c) 6 tons/ha; and d) 8 tons/ha. The rice variety used was the Kuriak Kusuik and the observed variables included: leaf color score, plant height, maximum number of tillers, number of productive tillers, panicle length, number of grains per panicle, percentage of empty grain, weight of 1000 grains, and grain yield. The result showed that the dosage of organic fertilizer of cow dung had significant effect on leaf color score at 56 days after planting (DAP), number of productive tillers, number of grains per panicle, and grain yield. In contrast, plant height, maximum number of tillers, panicle length, weight of 1,000 grains, and empty grain were not significantly affected. It was found that there was a positive relationship between the dosages of organic fertilizer of cow dung with the grain yield. The addition of cow dung as the organic fertilizer as much as 1 ton/ha to the soil could cause an increase in the yield of grain by 0.097 ton/ha.

Assessment of soil properties and yield under diverse input systems in Alfisols for rice (<em>Oryza sativa</em> L.) crop

“…Some researchers have found 5-7.5 t ha -1 cow dung compost has had a better influence on the growth and production of rice. One ton ha -1 of cow dung application has potential to increase the grain yield by 0.097 t ha -1 with the equation Y = 0.097x + 4.17 (r = 0.969) (Atman et al, 2018). Thus, in Yala season in 2019, the second season of the first transition year, observing lower grain yield in the organic input system was obvious (Table 3).…”

Shallot cultivation in tropical climate ecosystems using floating and non-floating systems with different doses of cow manure

“…The SPAD value has been widely used to estimate the chlorophyll content of other crops, such as tomatoes (Jiang et al, 2017). Furthermore, the application of cow manure could also increase leaf chlorophyll, as indicated by the SPAD value in wheat and rice plants (Shah et al, 2017;Atman et al, 2018). The combination of cultivation techniques and cow manure treatments resulted in no significant effect at 2 and 8 WAP, a significant effect at 4 WAP and a highly significant effect at 6 WAP.…”

“…One of the components that can increase the physical, chemical and biological qualities of the soil to boost the pro ductivity of shallot plants while reducing the amount of phosphorus (P) fertilizers added to Pdeficient soils is organic fertilizer (Noviyanty and Salingkat, 2018;Susikawati et al, 2018;Nguyen et al, 2021). One organic fertilizer that can promote plant develop ment is cow manure (Sudarsono et al, 2014;Atman et al, 2018;Musdalifah et al, 2021). Thus, this research was conducted with the aim of evaluating the growth response and production of shallot plants cultivated in polybags using nonfloating and floating systems with the application of various doses of cow manure fertilizer.…”

Effect of Bokashi Fertilizer on Increasing Soil Nutrients and Growth of Medicinal Plants

“…Several studies indicate the use of Bokashi of cow manure, namely: bokashi of cow manure treatment at dose of 3 t ha -1 combined with NPK inorganic fertilizer application of 200 kg ha -1 can reduce the evaporation rate and soil temperature fluctuation, and also increase the yield of shall [7], the addition of cow dung as the organic fertilizer as much as 1 ton/ha to the soil could cause an increase in the yield of grain by 0.097 ton/ha [14], the treatment of 15 t ha −1 cow manure accompanied by 225 kg ha −1 N-fertilizer gives a highest plant height than the other treatments and providing bokashi cow manure can increase the fruit length per plant, which is higher and significantly different compared to the control [15].…”