THE EFFECTS OF AFRIKELP® LG-1, VERMICOMPOST LEACHATE, EFFECTIVE MICROORGANISM AND COMPOST TEA ON TOMATO SEEDLING HEALTH AND DEVLOPMENT
THE EFFECTS OF AFRIKELP® LG-1, VERMICOMPOST
LEACHATE, EFFECTIVE MICROORGANISM AND
COMPOST TEA ON TOMATO SEEDLING HEALTH AND
B, Nzanza , Deborah Robertson-Andersson and Diana Marais
1 2 3
1. Natuurboedery Research Center, ZZ2 Farms, P. O Box 19 Mooketsi, 0825
2. Biodiversity and Conservation Biology, University of the Western Cape, Bellville 7535
3. Department of Plant production and Soil Science, University
Email first author:email@example.com
Fig 5 Fig 6
Fig 5 Fig 6
INTRODUCTION CONTROL CONTROL
Compost tea (CT), Effective Microorganism (EM), Vermicompost leachate (VL) and Afrikelp
(AK) are natural products that have been used either as a crop protection tool or as liquid
fertilizer. VL and CT contain nutrients which are in a readily available form for the crops. Like
EM, they both contain a huge range of microorganisms that are believed to play a vital role
during nutrient mineralization and uptake. Afrikelp and the CT contain a high cytokinin low
auxin ratio which helps to stimulate root growth, susceptible to establish a strong healthy plant
capable of resisting diseases. AFRIKELP (1:500)
OBJECTIVE Plant biomass comparison between Afrikelp 2 and
This study was conducted to determine the effects of these crop protection tools on the FIGURE 4
germination and seedling growth of Nemo-Netta tomato seedlings following a seed Plant biomass comparison between Compost tea and
• The data showed that all seed applications increased seedling size over the control (see
MATERIALS AND METHODS
figures 3 - 4).
• The experiment was conducted at Hishtill Nursery SA , Mooketsi Station, Limpopo • All the treatments were significantly larger in shoot length compared to the control with the
Province during Spring 2008 Medium Afrikelp® LG-1 treatment having the greatest effect (see figure 5).
• Tomato “Nemo-Netta” were sown into cell plug trays filled with vermiculite and peat moss • The AfriKelp® LG-1 1:500 dilution produced a significantly larger stem (data not shown)
• Treatments consisted of pre-soaking tomato seeds in solution corresponding to a and produced the largest seedling of the 3 AfriKelp® dilutions (see figure 5).
particular treatment. This were: CT, VL , EM (1:100 dilution), three AK dilutions . AK1 • Both the AfriKelp® LG-1 medium (1:500 dilution) and the Vermicompost application
(1:100), AK2 ( 1:500) & AK3 (1:1000) and the control (C). produced significantly longer roots than the control (see figure 6).
Fig 1 Fig 3 Fig 2 Fig 4 • There were no significant differences dry root to shoot ratio (data not shown)
FIGURE 1 FIGURE 2
Hishtill SA Greenhouse view Measuring of Plant height
• Seedling emergence was monitored on average every third day
• After four weeks, five plants were selected at random from each treatment and Box and whisker plot of number of plant height in cm after 4 weeks in each treatment. Plot shows mean,
destructively harvested. The rooting material was washed away to expose the roots. maximum and minimum as well as 95 % confidence intervals.
ANOVA showed significant differences: df = 31; f = 12.54; p = 0.0001.
• The plant height (shoot length), root length and stem diameter (ø) were measured (Fig. 2)
• Plants were then separated between shoots and roots and then dried at 50 ºC for 70 hours
to obtain a dry root: shoot ratio.
• Results were analysed statistically using STATISTICA V6, ANOVA followed by a Turkey
LSD post hoc test.
RESULTS AND DISCUSSION
TABLE 1 Table illustrating percentage germination over experimental period
Box and whisker plot of number of root length in cm after 4 weeks in each treatment. Plot shows mean,
maximum and minimum as well as 95 % confidence intervals.
ANOVA showed significant differences: df = 31; f = 1.99; p = 0.03.
All seeds benefited from a seed treatment, however the greatest benefit occurred with a medium (1: 500 dilutions) Afrikelp® LG-1 application. This indicates
that germination and seedling health can be improved through the use of crop protection tools.
The authors wish to thank Hishtill SA, ZZ2 and Afrikelp for providing products and funding for this research. Special thanks to Shlomo Zuker, Rone Strauss, Noman, Philemon Mogale and the