Day: March 31, 2021

The Tide Is High—and Getting Higher

Read the full story in Wired.

A trove of historic records show that dredging and sea level rise are making nuisance high tides worse along the US coasts.

Invasive species often start as undetected “sleeper populations”

Read the full story from the University of Wisconsin-Madison.

When an invasive species overruns a new ecosystem, it is often assumed that the invader recently arrived at its new home and rapidly took over. But a new report in the journal BioScience finds that many new arrivals aren’t nearly as impatient as this narrative implies.

Evaluating the Effects of Biochar with Farmyard Manure under Optimal Mineral Fertilizing on Tomato Growth, Soil Organic C and Biochemical Quality in a Low Fertility Soil

Rehman I, Riaz M, Ali S, Arif MS, Ali S, Alyemeni MN, Alsahli AA. (2021). “Evaluating the Effects of Biochar with Farmyard Manure under Optimal Mineral Fertilizing on Tomato Growth, Soil Organic C and Biochemical Quality in a Low Fertility Soil.” Sustainability. 13(5):2652. https://doi.org/10.3390/su13052652

Abstract: Biochar amendments are widely recognized to improve crop productivity and soil biogeochemical quality, however, their effects on vegetable crops are less studied. This pot study investigated the effects of cotton stick, corncob and rice straw biochars alone and with farmyard manure (FYM) on tomato growth, soil physico–chemical and biological characteristics, soil organic carbon (SOC) content and amount of soil nutrients under recommended mineral fertilizer conditions in a nutrient-depleted alkaline soil. Biochars were applied at 0, 1.5 and 3% (w/w, basis) rates and FYM was added at 0 and 30 t ha−1 rates. Biochars were developed at 450 °C pyrolysis temperature and varied in total organic C, nitrogen (N), phosphorus (P) and potassium (K) contents. The results showed that biochars, their amounts and FYM significantly improved tomato growth which varied strongly among the biochar types, amounts and FYM. With FYM, the addition of 3% corncob biochar resulted in the highest total chlorophyll contents (9.55 ug g−1), shoot (76.1 cm) and root lengths (44.7 cm), and biomass production. Biochars with and without FYM significantly increased soil pH, electrical conductivity (EC) and cation exchange capacity (CEC). The soil basal respiration increased with biochar for all biochars but not consistently after FYM addition. The water-extractable organic C (WEOC) and soil organic C (SOC) contents increased significantly with biochar amount and FYM, with the highest SOC found in the soil that received 3% corncob biochar with FYM. Microbial biomass C (MBC), N (MBN) and P (MBP) were the highest in corncob biochar treated soils followed by cotton stick and rice straw biochars. The addition of 3% biochars along with FYM also showed significant positive effects on soil mineral N, P and K contents. The addition of 3% corncob biochar with and without FYM always resulted in higher soil N, P and K contents at the 3% rate. The results further revealed that the positive effects of biochars on above-ground plant responses were primarily due to the improvements in below-ground soil properties, nutrients’ availability and SOC; however, these effects varied strongly between biochar types. Our study concludes that various biochars can enhance tomato production, soil biochemical quality and SOC in nutrient poor soil under greenhouse conditions. However, we emphasize that these findings need further investigations using long-term studies before adopting biochar for sustainable vegetable production systems.

Tillamook County Creamery Association plays the long game to match its values

Read the full story at Dairy Foods.

As a cooperative, Tillamook County Creamery Association prioritizes forward-thinking investments in product development and community initiatives.

Industry Eyeing EPA’s Hustle to Control ‘Forever Chemicals’

Read the full story at Bloomberg Law.

Industry attorneys say they’re bracing for a wave of corporate liability and litigation as the Biden administration works swiftly to fulfill a campaign promise to control “forever chemicals.”

Love bats? Think twice about that bat box, experts say

Read the full story from the University of Illinois.

Ever thought about buying or building a bat box to help bats? Think carefully about the design and where you put it, University of Illinois researchers say.

Here’s why: Bats and their pups can overheat and die in poorly designed or placed bat boxes, and in a warming climate, it could happen more often.

Illinois bat ecologists Joy O’Keefe and Reed Crawford recently synthesized the available data on bat boxes, also known as bat houses or artificial roosts, to raise awareness of the issue and motivate change in bat box design, marketing, and consumer education. Their recommendations are published in Conservation Science and Practice.

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