Search Jim Cramer's Mad Money trading recommendations using ourexclusive Mad Money Stock Screener and watch Jim Cramer's Mad Money Post Game videoexclusively on TheStreet.com.

NEW YORK (

TheStreet

) -- "There's a bull market in agriculture," Jim Cramer told the viewers of his

"Mad Money"

TV show Thursday, "and it's not too late to buy."

He said the recently announced Russian ban on grain exports due to drought conditions will spark a multi-quarter move for ag stocks.

Cramer said the Russian news today, along with already increased demand for food from China and Canada, is all great news for the ag stocks, and even though some have already shot higher, he'd still be a buyer.

Cramer said for the high risk crowd, he'd recommend fertilizer giant

Potash

(POT)

, which delivered a 19-cent-a-share earnings beat and noted on its conference call that an inflection point, where demand will outstrip supply, is here.

For the medium risk crowd, Cramer once again recommended

John Deere

(DE) - Get Report

, a stock up 6% since his last recommendation on July 28.

Finally, for conservative investors, Cramer said he still likes seed makers

Monsanto

(MON)

and

DuPont

(DD) - Get Report

, both of which are also up nearly 6% since July 28.

Cramer said perhaps the only losers from the grain shortage will be

General Mills

(GIS) - Get Report

and

Kellogg

(K) - Get Report

, two companies whose profits will be hit by higher grain prices. Also on the "don't buy" list is

Archer Daniels Midland

(ADM) - Get Report

, a stock Cramer said is guilty until proven innocent until it posts some positive quarterly results.

"The ag bull market is here to stay," said Cramer, and investors need to do some homework and get in now.

Next-Generation Telco

In the "Executive Decision" segment, Cramer spoke with Jeff Gardner, president and CEO of

Windstream

(WIN) - Get Report

, a regional telco provider Cramer has been behind since June 5, 2008.

Gardner said Windstream is in great shape, and its dividend is more safe now than it was just a few years ago. He said investors need to pay more attention to Windstream's cash flow per share, which has been rising, and less attention on other metrics which don't truly depict the company's health.

Gardner said while the larger telcos are losing 10% of their land lines, Windstream is only losing 3% of their lines thanks to smart bundling of other services. He said the company is transforming into a next-generation telco, and the growth opportunities are in broadband and business services, two areas where Windstream has great prospects.

When asked about future acquisitions, Gardner said Windstream still has lots of room for acquisitions, and all four of the company's deals in 2010 have been accretive to earnings. He said the balance sheet is strong and there are still opportunities out there.

Cramer continued his support of Windstream.

LED Lighting Plays

When it comes to cutting energy costs, the LED lighting business is in the sweet spot, Cramer told viewers, as he recommended three great ways to play the coming death of the incandescent light bulb.

Cramer reminded viewers that in 2007, Congress passed a law increasing energy efficiency in light bulbs starting in 2012. With over 5 billion bulbs in the U.S. alone, this means a huge opportunity for more energy efficient technology.

Cramer said the strongest player is

Cree

(CREE) - Get Report

, a maker of the chips needed to control LED bulbs. Many investors have been selling Cree, citing increased competition, but Cramer said those sellers are dead wrong since the competition is coming from LED screens, which is only 25% of Cree's business. Lighting, he said, accounts for 50% of Cree's business, and is growing.

Cree is already up 117% from its lows, and trades at 25 times earnings, but Cramer said the stock is still cheap given its 22% growth rate and future prospects.

Speculative investors may also want to consider

Power Integrations

(POWI) - Get Report

, a maker of high voltage semiconductors for consumer and industrial electronics, said Cramer. Power Integrations has exposure to the LED market. Also on the list is

Rubicon Technologies

(RBCN) - Get Report

, a small player, but one with growing exposure to the group.

Chip Slowdown

Cramer spoke with Keith Jackson, president and CEO of

ON Semiconductor

(ONNN)

, a stock that's down 11% since Cramer added it to his mobile Internet index this time last year.

Jackson said there's no doubt in his mind that the growth rate for the semiconductor business is slowing from where it was. He said investors need to come to terms with these slower rates, but that does not mean that the growth cycle is over.

When asked for more specifics, Jackson said that automotive, industrial and wired communications are still strong, as is the insatiable demand for smartphones. However, he said most other consumer markets are more "skittish" and volatile, with suppliers keeping very lean inventory levels.

Cramer said with growth rates slowing, he'd be worried if ON Semi's stock was at its high near $10 a share; but he added with shares trading at just $6, he's not as worried.

Lightning Round

Cramer was bullish on

Citigroup

(C) - Get Report

,

Chevron

(CVX) - Get Report

,

ConocoPhillips

(COP) - Get Report

and

Annaly Capital

(NLY) - Get Report

.

He was bearish on

Qwest Communications

(Q)

,

ATP Oil & Gas

( ATPG) and

PAA Natural Gas Storage

(PNG)

.

-- Written by Scott Rutt in Washington D.C.

To watch replays of Cramer's video segments, visit the Mad Moneypage on CNBC

.

Want more Cramer? Check out Jim's rules and commandments forinvesting from his latest book by

clicking here.

For more of Cramer's insights during the Lightning Round, clickhere

.

At the time of publication, Cramer was not long on any stock mentioned.

Jim Cramer, host of the CNBC television program "Mad Money," is a Markets Commentator for TheStreet.com, Inc., and CNBC, and a director and co-founder of TheStreet.com. All opinions expressed by Mr. Cramer on "Mad Money" are his own and do not reflect the opinions of TheStreet.com or its affiliates, or CNBC, NBC UNIVERSAL or their parent company or affiliates. Mr. Cramer's opinions are based upon information he considers to be reliable, but neither TheStreet.com, nor CNBC, nor either of their affiliates and/or subsidiaries warrant its completeness or accuracy, and it should not be relied upon as such. Mr. Cramer's statements are based on his opinions at the time statements are made, and are subject to change without notice. No part of Mr. Cramer's compensation from CNBC or TheStreet.com is related to the specific opinions expressed by him on "Mad Money."

None of the information contained in "Mad Money" constitutes a recommendation by Mr. Cramer, TheStreet.com or CNBC that any particular security, portfolio of securities, transaction, or investment strategy is suitable for any specific person. You must make your own independent decisions regarding any security, portfolio of securities, transaction, or investment strategy mentioned on the program. Mr. Cramer's past results are not necessarily indicative of future performance. Neither Mr. Cramer, nor TheStreet.com, nor CNBC guarantees any specific outcome or profit, and you should be aware of the real risk of loss in following any strategy or investments discussed on the program. The strategy or investments discussed may fluctuate in price or value and you may get back less than you invested. Before acting on any information contained in the program, you should consider whether it is suitable for your particular circumstances and strongly consider seeking advice from your own financial or investment adviser.

Some of the stocks mentioned by Mr. Cramer on "Mad Money" are held in Mr. Cramer's Action Alerts PLUS Portfolio. When that is the case, appropriate disclosure is made on the program and in the "Mad Money" recap available on TheStreet.com. The Action Alerts PLUS Portfolio contains all of Mr. Cramer's personal investments in publicly-traded equity securities only, and does not include any mutual fund holdings or other institutionally managed assets, private equity investments, or his holdings in TheStreet.com, Inc. Since March 2005, the Action Alerts PLUS Portfolio has been held by a Trust, the realized profits from which have been pledged to charity. Mr. Cramer retains full investment discretion with respect to all securities contained in the Trust. Mr. Cramer is subject to certain trading restrictions, and must hold all securities in the Action Alerts PLUS Portfolio for at least one month, and is not permitted to buy or sell any security he has spoken about on television or on his radio program for five days following the broadcast.