Phan Thi, Ngoc Tu (2020) THE EFFECT OF Jussiaea octovalvis WEED DENSITIES ON THE GROWTH AND YIELD OF SEVERAL INTRODUCED VIETNAM RICE (Oryza sativa L.) VARIETIES. Masters thesis, Universitas Andalas.
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Abstract
Rice is staple grain production play an important role for food security and the socioeconomic value of agriculture in South East Asia countries. Among the factors that have negative effects on rice, weed is the major one. Weed has the effects on growth and yield of rice by competition about light, water, nutrient, and space. Jussiaea octovalvis is a kind of weed in the field during time of rice growth to mature which effect on growth and yield of rice but not significant different based on this research. Treatments were arranged factorially in Randomized Block Design (RBD) with 2 factors, 20 treatments (4 varieties, 5 of weed densities) and 4 replications, each replication used 2 pots for each treatment. The data of the study showed that had different between the rate of growth and the yield of rice grain recovery product; especially at data of LL 58 DAP showed significant difference (P=0.017), which the highest rate is 59.13 cm of V2; for harvest data showed that V3 is the best result but it is also a sensitive one in condition of weed densities impaction more than the others varieties (D0V3=620.5; D4V3=438). In addition, the measurement of W1000 of rice grain (30.96 g) and Wt per pot (20.01 g) of D0V3 is weight more than the others treatment; within D4V4 was obtained lowest of W1000 (19.26 g) and the lowest of Wt is D1V1 (5.25 g). Beside that D2 and D4 are more effective on growth and yield of rice and it was non – significant. However, it is not interaction between weed densities and varieties rice.
| Item Type: | Thesis (Masters) |
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| Primary Supervisor: | Prof. Ir. Ardi, M.Sc. |
| Uncontrolled Keywords: | Jussiaea octovalvis weed, rice, grain yield, weed densities, rice variety. |
| Subjects: | S Agriculture > S Agriculture (General) |
| Divisions: | Pascasarjana (Tesis) |
| Depositing User: | s2 agronomi agronomi |
| Date Deposited: | 10 Jul 2020 04:53 |
| Last Modified: | 10 Jul 2020 04:53 |
| URI: | http://scholar.unand.ac.id/id/eprint/59376 |
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