Pertumbuhan Rumput Gajah Kerdil (Pennisetum purpureum ‘Mott’) di Lahan Terbuka Bekas Penambangan Batu Kapur Kawasan Karst Gombong Jawa Tengah

Abstract

The negative impact of limestone mining on a karst area around Gombong is the destruction of ecosystem. Ecosystem's destruction will decrease the variety, productivity, quality and continuity of indigenous livestock forages. The aim of this research is to know the growth rate of Dwarf Elephant grass (Pennisetum purpureum 'Mott') in the post mining limestone with various methods of planting. The method used in this research is an experimental method in an open field that was used for limestone mining by using Completed Random Design. The treatment consists of 4 kinds of planting methods with 4 repetitions, while the research treatment used in this experiment is the RG (the field with Dwarf Elephant Grass); RGL (the field with Dwarf Elephant Grass + peanut legume); RGK (the field with Dwarf Elephant Grass + goat's compost 1,5 kg/m 2 ) and RGKL (the field with Dwarf Elephant Grass + peanut legume + goat's compost 1,5 kg/m 2 ). The parameter used for the research is the growth rate which includes the plant's height, the length of the leaves, and also the width of Dwarf Elephant Grass's leaves (Pennisetum purpureum 'Mott') until the 8 th week.The result of this research shows that the use of goat's compost 1,5 kg/m 2 and planting of peanut can give significant results to the growth of Dwarf Elephant Grass in open field that was used for limestone mining.

PENGARUH JARAK TANAM TERHADAP PERTUMBUHAN DAN PRODUKTIVITAS RUMPUT GAJAH ODOT (Pennisetum Purpureum cv. Mott)

“…Grafik Pertambahan Lebar Daun Rumput Gajah Odot Berdasarkan hasil analisis sidik ragam terhadap lebar daun menunjukkan bahwa perbedaan jarak tanam tidak berpengaruh nyata (P>0,05) terhadap lebar daun rumput gajah odot. Sesuai pendapat Sarwanto (2017), yang menyatakan bahwa hasil analisis ragam menunjukkan bahwa metode penanaman berpengaruh tidak nyata (P>0,05) terhadap lebar daun rumput gajah kerdil. Sirait dan Tarigan (2015), juga menyatakan bahwa perlakuan jarak tanam tidak berpengaruh secara nyata (P>0,05) terhadap lebar daun rumput gajah kerdil.…”

Dwarf Elephant Grass (Pennisetum purpureum cv. Mott) as Forage for Ruminant

“…Rellam et al (2017) menyebutkan adanya pengaruh interaksi antara taraf pupuk nitrogen dengan naungan 70% menghasilkan panjang daun, jumlah daun dan tinggi tanaman terbaik. Rumput gajah mini juga mempunyai tingkat pertumbuhan yang cukup tinggi di lahan terbuka bekas penambangan batu kapur yang dipupuk kotoran kambing dan ditanam bersama kacang tanah menghasilkan tinggi tanaman 75-88 cm (Sarwanto & Tuswati 2017).…”

Performance of Odot Elephant Grass (Pennisetum purpureum cv. Mott) and Sweet Potato (Ipomoea batatas L.) Cultivated as Mixed Cropping

“…Panicum maximum showed the highest total dry matter (DM) yield in mixed crops of P. maximum and S. grandiflora cultivated on medium saline soil with the application of 20 tons/ha of manure (Kusmiyati et al, 2016). Food crops such as peanuts have been applied to a mixed cropping system with Odot elephant grass (Rahayu et al, 2021;Sarwanto and Tuswati 2017), but little information about sweet potato cultivation with Odot elephant grass as mixed cropping was found.…”