Rinduwati’s scientific contributions

The productivity of natural pastures in producing quality forage is influenced by several factors, one of which is the availability of fields and seasons. In addition, the forage composition of a pasture also determines the quality of forage feeds. This study aims to determine the botanical composition and forage production in the dry season in a natural pasture in Gilireng village, Wajo regency. This study used a descriptive/survey method as well as primary data and observations in the field. Measurement of forage composition and production was carried out using the Summed Dominance Ratio method based on frequency, density, and cover area. The results showed that the botanical composition was dominated by weeds (45%), subsequently of grasses (35%), and then legumes (20%). Fresh weight production and the dry matters were 53.81 tons/ha and 8.39 tons/ha, respectively. Therefore, it can be concluded that the botanical composition and forage production during the dry season was relatively low in Gilireng village.

Corn crop is categorized as C4 plant that may be used as alternative feed substitution of forage grass with high nutritional content. The aim of this study is to identify the effect of NPK fertilizer addition to productivity and nutrient content of corn crop in dry land. This study was performed from March to May 2019 (by the end of rainy season) in Tanete Riaja, Barru. This study employed completely randomized design with 4 treatments namely, A1: No fertilizer addition, A2=100 kg ha ⁻¹ , A3=200 kg ha ⁻¹ , A4=300 kg ha ⁻¹ and 3 replications. The corn crops used in this study was corn hybrid (Bisi-18) that were harvested at the age of 2 months. The result of this study showed that the use of NPK fertilizer improves the growth and productivity of corn crop, particularly the production and nutritional quality. The highest increase of production and growth occured in A3.

The study aimed to identify the effect of legume types on the biomass, protein content, and economic value of nitrogen in Setaria ancpes Stapf and legume intercropping. The research site was in Makassar. This study employed Completely Randomized Design consisting of 5 groups. The experimental land area of 408 m ² (17 x 24m) was divided into 25 plots (each 3 x 4 m). The used forages in this study were Setaria ancpes Stapf, Centrosema pubescens , Clitoria ternatea and Dioclea quanensis . The treatments in this study were L0: Setaria ancpes Stapf; L1: Setaria ancpes Stapf + Centrosema pubscens ; L2: Setaria ancpes Stapf + Clitoria ternatea ; L3: Setaria ancpes Stapf + Dicolea quanensis ; L4: Urea fertilizer (20 kg N/ha). The study indicated the legume-grass intercropping in Setaria ancpes Stapf may result in the increased protein content and forage biomass. Clitoria ternatea contributed higher economic value of nitrogen compared to Centrosema pubescens and Dioclea quanensis .

The objective of this study was to determine the effect of vermicompost fertilizer level on growth, dry matter yield and quality of sorghum (Sorghum bicolor (L.) Moench)). This study was arranged using a split-plot in time trial design with the main plot of each main harvest and the level of application of vermicompost fertilizer as subplots. The vermicompost fertilizer were : P0= 0 kg vermicompost/ha (0 kg N/ha, 0 kg P2O5/ha, 0 kg K2O/ha); P1 = 5.000 kg vermicompost/ha (30.5 kg N/ha, 11 kg P2O5/ha, 41 kg K2O/ha); P2 =10.000 kg vermicompost/ha (61 kg N/ha, 22 kg P2O5/ha, 82 kg K2O/ha); P3= 15.000 kg vermicompost/ha (91.50 kg N/ha, 33 kg P2O5/ha, 123 kg K2O/ha), respectively. The variables in this study included the plant height, dry matter yield, crude protein, crude fiber, NDF and ADF. The results showed that if the vermicompost fertilizer dosage was increased the plant height, dry matter yield and crude protein would increase, but did not affect the crude fiber, NDF and ADF. Regrowth (ratoon) influences plant height and dry matter yield, while crude protein and crude fiber and ADF do not affect. It can be concluded that applying vermicompost fertilizer significantly increased growth, dry matter yield and significantly affected crude protein, while regrowth resulted in lower growth and dry matter yield.

The study was conducted on some pastures in Gowa Regency for approximately one year period. The objective of this study was to determine the botanical diversity and capacities of rangelands in Gowa Regency, South Sulawesi. A case technical survey method was used in the present study. The survey was conducted in the paddocks by identifying and weighing the plants that were growing in the paddocks. Botanical diversity found in pastures in this area as dominant was 15 species, which consisted of Cyperus rotundus grass, Axonopus compressu, African grass, Imperata cylindrica, Cynodon dactylon, Paspalum conyugatum, Stenotaphrum secundatum; legumes consist of Desmodium intortum, Calopogonium muconoides, Crotalaria junce; Eughorbia hirta L, and Phyllanthus niruri L. The other plants consisted of Mimosa pudica, Chromolaena odorata and Lamtana camara. Carrying capacity of pasture in Gowa Regency was 0.88 AU/ha/ year.

The objective of this paper was to evaluate the possibility of substituting elephant grass (Pennisetum purpureum) with rice straw that has been fermented with white rot fungi in goat. A total of 12 goats were randomly assigned to feed on one of treament diets according to completely randomised block design. The animals were divided into three blocks according to their initial body weight. The treatments were: R1 = 100% Elephant grass, R2 = 70% Elephant grass + 30% fermented rice straw, R3 = 30% Elephant Grass + 70% fermented rice straw and R4 = 100% fermented rice straw. Parameters measured were dry matter and organic matter digestibility, feed consumption, average daily gain and feed efficiency of goats. Data analysis indicated that the DM and organic matter digestibility significantly decreased when the level of fermented rice straw increased in the ration. Inclusion of fermented rice straw up to 70% in the ration did not significantly alter DM and OM digestibily but substituting grass with 100% fermented rice straw markedly decreased DM and OM digestibilities. The best feed efficiency was found in the goats given R3 (0.15) followed by R2 (0.10), R1 (0.09) and R4 (0.04). In conclusion, rice straw that has been fermented using white rot fungi can be used to substitute elephant grass up to 70% in the ration of goats. Future work is to optimize the use of agro-industrial waste into quality feed with fermented by white rot fungi.