Karti PDMH
Faculty of Animal Science, Bogor Agricultural University, Indonesia

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Physiological responses of Indigofera zollingeriana, a feed plant at different levels of drought stress and trimming interval I, Herdiawan; L, Abdullah; ., Yoki; PDMH, Karti; N, Hidayati
Indonesian Journal of Animal and Veterinary Sciences Vol 18, No 1 (2013)
Publisher : Indonesian Animal Sciences Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (189.8 KB) | DOI: 10.14334/jitv.v18i1.258

Abstract

The objectives of this experiment were to evaluate the effect of drought stress and trimming intervals on physiological responses of Indigofera zollingeriana. The experiment was arranged in a completely randomized design (CRD), 3x3 factorial and each treatment had four replications. The first factor consisted of 3 level of drought stress i.e: 100% field capacity (FC) (as a control), 50% FC, and 25% FC.  The second factor was comprised of 3 trimming intervals, those were at 60, 90 and 120 days. The observed variables were leaf water potential, relative water content, proline, and water soluble carbohydrate (WSC) concentrations. Data were analyzed by ANOVA and differences between treatments were tested by LSD. The results showed that there were no interaction (P<0,05) between drought stress and trimming interval on all observed variables. Drought stress treatment significantly (P<0,05) decreased leaf water potensial and relative water content, whereas proline, and water soluble carbohydrate (WSC) contents increased. Trimming interval significantly (P < 0.05) on leaf water potensial, and water soluble carbohydrate, whereas the relative water content and proline content were not significantly. Key Words: Indigofera zollingeriana, Drought stress, Trimming interval, Physiologycal response
Evaluation, Productivity and Competition of Brachiaria decumbens, Centrosema pubescens and Clitoria ternatea as Sole and Mixed Cropping Pattern in Peatland’s Arsyadi, Ali; Luki, Abdullah; PDMH, Karti; MA, Chozin; DA, Astuti
Indonesian Journal of Animal and Veterinary Sciences Vol 19, No 2 (2014)
Publisher : Indonesian Animal Sciences Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (263.3 KB) | DOI: 10.14334/jitv.v19i2.1036

Abstract

This study was carried out to determine the productivity, competition indices and nutrient content of Brachiaria decumbens (grass), Centrosema pubescens and Clitoria ternatea (legumes) as sole and mixed cropping system in peatland in Pekanbaru, Indonesia from October 2011 to November 2012. The experiment was set up in randomized complete block design with five treatments and three blocks as replication. Five treatments compared: B. decumbens sole cropping (Bd), C. pubescens sole cropping (Cp), C. ternatea sole cropping (Ct), B..decumbens and C. pubescens mixed cropping (Bd+Cp) and B. decumbens and C..ternatea mixed cropping (Bd+Ct). The dry matter (DM) yield of B. decumbens was significantly (P<0.05) increased by mixed cropping. B. decumbens DM yield in C. pubescens intercrop increased by 147.9% and in C. ternatea intercrop increased by 74.1% compare to sole B. decumbens. Land equivalent ratio (LER) value range from 1.04 (Bd+Ct) to 1.58 (Bd+Cp). The crowding coefficient (K) value of B. decumbens in both mixed croping system was higher than K value of C. pubescens and C. ternatea. The total K value for Bd+Cp was higher than Bd+Ct. The competition ratio (CR) value of B. decumbens mixed cropping with C. pubescens and C. ternatea were.>1. The aggressivity (A) value of B. decumbens in both mixed cropping was positive. The crude protein (CP) content of B.decumbens did not significantly (P>0.05) increased by mixed cropping with legumes. Intercropping with B. decumbens significantly (P<0.05) decreased CP content of C. ternatea. Meanwhile neutral detergent fibre (NDF) and acid detergent fibre (ADF) content of B. decumbens did not decrease by intercropping with C.pubescens and C. ternatea. In conclusion, mixed cropping with C. pubescens and C. ternatea in peatland increased DM yield of B. decumbens. Mixed cropping with B. decumbens did not influence DM yield of C. pubescens and decreased DM yield and CP content of C..ternatea. Mixed cropping of B. decumbens with C. pubescens and B. decumbens with C..ternatea in peatland did not increase total DM yield of forage per unit area of land and nutrition contents of forage. B. decumbens was more competitive and dominant than C..pubescens and C. ternatea in peatland. Key Words: Cropping System, Forage, Nutrient Contents, Yield, Peatland